13138758 has 12 divisors (see below), whose sum is σ = 28467348. Its totient is φ = 4379580.

The previous prime is 13138757. The next prime is 13138771. The reversal of 13138758 is 85783131.

13138758 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13138757) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 364948 + ... + 364983.

It is an arithmetic number, because the mean of its divisors is an integer number (2372279).

Almost surely, 2^13138758 is an apocalyptic number.

13138758 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13138758 is an abundant number, since it is smaller than the sum of its proper divisors (15328590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13138758 is a wasteful number, since it uses less digits than its factorization.

13138758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729939 (or 729936 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 13138758 is about 3624.7424736111. The cubic root of 13138758 is about 235.9670905945.

The spelling of 13138758 in words is "thirteen million, one hundred thirty-eight thousand, seven hundred fifty-eight".